.85pte Vs .70 4 Bolt

[mec108]

Comparing a .85pte 3 bolt to a .70 4 bolt is there any difference in performance?

 

[NoNos38]

 

[mec108]

Sorry guys, I was half asleep when, I wrote this one. Would there be any performance gains if, I was to change my .85 precision 3 bolt turbine exhaust housing to a .70 4 bolt exhaust housing for my pt-72 q- trim turbo. Just curious? THANKS

 

[norbs]

I would say if you have enough stall you will pick up 2 solid mph over a 3 bolt. 85. SInce i have tested this. The .68 on a 231 motor works well, the .81 works ok and is 1 mph faster on top over the .68 4 bolt, but is a bit sluggish on the street.

 

[mec108]

THANKS